Process for reducing the electrical consumption of a...

Details Process for reducing the electrical consumption of a... Process for reducing the electrical consumption of a...

2005-04-05

2005-04-05

Maung, Nay (Department: 2684)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S522000

Reexamination Certificate

active

06876874

ABSTRACT:
The electrical consumption of a cellular mobile telephone is reduced by using fractional-division phase-locked loops receiving a frequency reference from a fairly inaccurate quartz oscillator. Electrical consumption is also reduced by switching the output of the oscillator onto the input of the processing stage when the transmission/reception stage is inactive. The fractional-division phase-locked loops can then be deactivated.

REFERENCES:
patent: 5055802 (1991-10-01), Hietala et al.
patent: 5111162 (1992-05-01), Hietala et al.
patent: 5943613 (1999-08-01), Wendelrup et al.
patent: 5950120 (1999-09-01), Gardner et al.
patent: 0351230 (1990-01-01), None
patent: 0851593 (1998-07-01), None
patent: 0865167 (1998-09-01), None

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